Evidence map›Paper›PMID 14684866›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2003

Hippocampal excitability increases during the estrous cycle in the rat: a potential role for brain-derived neurotrophic factor.

Helen E Scharfman, Thomas C Mercurio, Jeffrey H Goodman, Marlene A Wilson, Neil J MacLusky

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 128 papers.

0numbers the graph read from it
0cells of the map it votes in
128citing papers in PubMed
13.9field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

128 citing papers in PubMed, 273 citations in OpenAlex.

  1. Trial
  2. The role of BDNF promoter VI in mediating protective effects of prophylactic (R,S)-ketamine.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
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68 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Helen E ScharfmanCenter for Neural Recovery and Rehabilitation Research, Helen Hayes Hospital, New York State Department of Health, West Haverstraw, New York 10993-1195, USA. scharfmanh@helenhayeshosp.org
Thomas C Mercurio
Jeffrey H Goodman
Marlene A Wilson
Neil J MacLusky
Columbia University · USUniversity of South Carolina · USHelen Hayes Hospital · US

Funding

BDNF AND HIPPOCAMPAL HYPEREXCITABILITYR01NS037562 · NINDS · NATHAN S. KLINE INSTITUTE FOR PSYCH RES · PI SCHARFMAN, HELEN E · 1999 to 2010
$2.6M
DEFINING AN ORAL THERAPEUTIC FOR MULTIPLE SCLEROSISR42NS035762 · NINDS · CELL THERAPEUTICS, INC. · PI SINGER, JACK W · 1999 to 2000
$225k
PHOSPHATIDIC ACID INHIBITORS EFFECT ON EAER41NS035762 · NINDS · CELL THERAPEUTICS, INC. · PI KLAUS, STEPHEN J · 1996 to 1996
–
NINDS NIH HHS NS 35762NINDS NIH HHS R01 NS037562
6 · The paper itself

Abstract

To test the hypothesis that induction of BDNF may contribute to changes in hippocampal excitability occurring during the female reproductive cycle, we examined the distribution of BDNF immunoreactivity and changes in CA1 and CA3 electrophysiology across the estrous cycle in rats. Hippocampal BDNF immunoreactivity increased on the day of proestrus as well as on the following morning (estrus), relative to metestrus or ovariectomized animals. Changes in immunoreactivity were clearest in mossy fiber axons of dentate gyrus granule cells, which contain the highest concentration of BDNF. Increased immunoreactivity was also apparent in the neuropil-containing dendrites of CA1 and CA3 neurons. Electrophysiological recordings in hippocampal slices showed robust cycle-dependent differences. Evoked responses of CA1 neurons to Schaffer collateral stimulation changed over the cycle, with larger maximum responses at both proestrus and estrus relative to metestrus. In area CA3, repetitive hilar stimuli frequently evoked multiple population spikes at proestrus and estrus but only rarely at other cycle stages, and never in slices of ovariectomized rats. Hyperexcitability in area CA3 at proestrus was blocked by exposure to the high-affinity neurotrophin receptor antagonist K252a, or an antagonist of the alpha7 nicotinic cholinergic receptor, whereas it was induced at metestrus by the addition of BDNF to hippocampal slices. These studies suggest that hippocampal BDNF levels change across the estrous cycle, accompanied by neurophysiological responses that resemble the effects of BDNF treatment. An estrogen-induced interaction of BDNF and alpha7 nicotinic receptors on mossy fibers seems responsible for estrous cycle changes in area CA3. Periovulatory changes in hippocampal function may, thus, involve estrogen-induced increases in BDNF expression.

Indexed as

Action Potentialsalpha7 Nicotinic Acetylcholine ReceptorAnimalsBrain-Derived Neurotrophic FactorCarbazolesCells, CulturedEnzyme InhibitorsEstrous CycleFemaleGonadal Steroid HormonesHippocampusIndole AlkaloidsModels, NeurologicalMossy Fibers, HippocampalPyramidal CellsRatsalpha7 Nicotinic Acetylcholine ReceptorBrain-Derived Neurotrophic FactorCarbazolesChrna7 protein, ratEnzyme InhibitorsGonadal Steroid HormonesIndole AlkaloidsReceptors, NicotinicReceptor, trkBstaurosporine aglycone

Identifiers

PMID14684866
PMCPMC1283101
OpenAlexW2135468643

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.